The Parawedge® Anchor Stud is cold formed and consists of a threaded section with standard coarse bolt threads at one end and a parabolic shaped taper mandrel neck at the opposite end for a smoother expansion. It has a 360 deg clip for more contact, a torque controlled expansion and can be installed into a bottomless hole. Three head styles are available hex nut, wire hanger and tie down hook. More than 39 sizes are available, in two types of material carbon steel and 304 stainless steel.